As recently as last year, Baldwin has expressed his desire to move on from 30 Rock, before signing on for a seventh season in January. In May, NBC renewed the show for a shortened 13-episode final season.

Baldwin, who has received Emmy, Golden Globe and SAG awards for his portrayal of NBC boss Jack on the show, recently told TV Guide Magazine that he had "very mixed feelings" about the show ending and insisted, " I'll also never have as good a job as this — ever."

Neither NBC nor 30 Rock star/creator Tina Fey has commented on his tweet, although Fey told Entertainment Weeklyrecently: "Not a day goes by that he doesn't go around to the crew and agitate for a Season 8: 'You've gotta change your minds!'"